CVE-2021-44730

Published: 17 February 2022

snapd 2.54.2 did not properly validate the location of the snap-confine binary. A local attacker who can hardlink this binary to another location to cause snap-confine to execute other arbitrary binaries and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

Priority

High

CVSS 3 base score: 7.8

Status

References

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44730
• https://ubuntu.com/security/notices/USN-5292-1
• https://www.openwall.com/lists/oss-security/2022/02/17/2
• https://github.com/snapcore/snapd/commit/f3f669d720ed8b0bcb73da7789843bf43b5c16cf
• NVD
• Launchpad
• Debian